CPR and First Aid. These are trainings you need to help people in a medical emergency, like when someone passes out on a bus. But what if that emergency is a mass shooting like what happened in Las Vegas or San Bernadino?

This story is on Highland Hospital’s trauma prevention program training, “Stop the Bleed.” This is a one-hour course recommended by the American College of Surgeons to train individuals to apply tourniquets and attend to life-threatening wounds in case of a mass shooting or terrorist attack.